Fluid and Acid-Base Lab

Part 1: ABG Detective

HCO₃⁻ (base, set by kidneys) PaCO₂ (acid, set by lungs) Normal range ↑ / ↓ = above / below normal

pH PaCO₂ (mmHg) HCO₃⁻ (mEq/L) Normal range Dashed line = a change you made

Time speeds up after every change, so you can see the lungs (minutes) and then the kidneys (days).

Breathing rate 12 /min

4normal 12–1640

Automatic (brainstem chemoreceptors). Move the slider to breathe for the patient.

Kidney HCO₃⁻ handling balanced

excrete HCO₃⁻balancedkeep / make

Automatic (kidneys respond to pH). Move the slider to take over.

Live acid-base readouts
pH	7.40

Intracellular fluid (ICF) Interstitial fluid Plasma Water moving Dashed line = starting level

Predict first

Fluid compartment readouts
ICF	28.00 L